title: Experimental evidence for the existence of the passive antitumor defense system formed by the synergistic action of certain small substances of the circulatory system.
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D004338:Drug Combinations; D004354:Drug Screening Assays, Antitumor / Q000379:methods*; D004357:Drug Synergism; D004586:Electrophoresis; D005260:Female; D006801:Humans; D007113:Immunity, Innate / Q000276:immunology*; D007274:Injections, Intraperitoneal; D020014:K562 Cells; D051379:Mice; D008807:Mice, Inbred BALB C; D012996:Solutions / Q000008:administration & dosage; D019139:Tumor Escape / Q000276:immunology; D014815:Vitamins / Q000494:pharmacology; D023041:Xenograft Model Antitumor Assays / Q000379:methods*
chemical_list: D004338:Drug Combinations; D012996:Solutions; D014815:Vitamins